The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Jun. 05, 2012
Filed:
Jun. 04, 2010
Applicants:
Alfazazi Dourfaye, Paris, FR;
Bruno Cuillier, Pau, FR;
Inventors:
Alfazazi Dourfaye, Paris, FR;
Bruno Cuillier, Pau, FR;
Assignee:
Varel International, Ind., L.P., Carrollton, TX (US);
Primary Examiner:
Int. Cl.
CPC ...
E21B 10/36 (2006.01);
U.S. Cl.
CPC ...
Abstract
A cutter is configured with a diamond table made from a thin hard facing material layer of polycrystalline diamond bonded to a backing layer made from cemented tungsten carbide. The face of the diamond table includes a concavity formed with a curved shape wherein at least a portion of the face in a center of the cutter is recessed with respect to at least some portion of the face about the perimeter of the cutter. This concave curved shape is formed in the diamond table itself such that the diamond table has a varying thickness depending on the implemented concavity.